Indicating device for annunciators and the like.



M. NORDOPF. INDIGATING DEVICE POR ANNUNGITORS AND TEE LIKE. APPLIOATIONHmm MAY 12, 1911.

1,131,855. Patented Mar. 16, 1915.

3 SHEETS-SHEET 1.

'E m m;mmmmmmmimmmmmmmgmmmmm mmmmmmmmmmm IIImIHIIl mmmmmmm mmm m mmmmmmmm'mmmmmm mmmmmmmm mmm.. m mmmmmmm mmmmmlm "lmmmlmmm mmmmmmmmmmmmmmmmmmmmmm m mmmmmmmm mm mmmm mm m m 'mmmmi l@ mmmmmmmmmmmmmmmfmmmmmmmmmmmmmmm mmmmmm l mmlllllm mmmlml'm l Il m l i m mmm ml mmmmmmmmmmm mmmmmmmmmm mmm m M. NORDOFF.

INDIGATING DEVICE 011 ANNUNGIATORS AND THBLH'E'.'

APPLICATION FILED MAY 12, 1911.

Patented 16 1915.

HBTS-SHBET 2.

THE NORRIS PETERS CO..PHu|u-L1THO.. WASHINGTON. D.

M. NoRDoPF. INDIGATING DEVICE FOR ANNUNCIATORS AND THE LIKE.

APPLICATION FILED MAY 12, 1911.

Patented M ar. 16, 1915.

3 SHEETS-SHEET 3.

THE NORRIS PETERS Co., FHOTO-LITHO.. WASH/NGmN, D. C.

annunciator provided with the one metal side walls 2 nunciator MAXNORDOFF, OF CHICAGO, ILLINOIS, ASSIGNOR TO ELEVATOR SUPPLY & REPAIRCOMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

INDICATING DEVICE FOR ANN UNCIATORS AND THE LIKE.

T0 all whom itmag/ concern Be it known that I, Max NoRDoFF, a c1t1- zenof the United States, and a resident of Chicago, county of Cook, andState of Iliinois, have inventedV certain new and useful Improvements inIndicating Devices for Annunciators and the like, of which the followingis a full, clear, and exact description.

The invention relates to annunciators and more particularly toimprovements in the indicating devices therefor and seeks to provide asimple and effective form of indicating device, which can beeconomically manufactured and which can be readily shifted between itsnormal and set positions, but which is so arranged that it cannot beeasily shifted by shocks, jars or otherwise accidentally either from itsnormal or set position.

The invention consists in the features of improvement hereinafter setforth, illustrated in its preferred forms in the accompanying drawingsand more particularly pointed out the appended claims.

In the accompanying drawings, Figures l and 2 are side and frontelevations of an form of the improved indicator and with the casing ofthe annunciator shown in section. Fig. 3 is a view in elevation of anannunciator provided with another form of the improved indicator withthe annunciator casing shown in dotted lines. Fig. 4 is a verticalsection on line 4 4 of Fig. 3. Fig. 5 is an enlarged detail view withthe annunciator casing shown in section on line 5-5 of Fig. 2. Fig. 6 isa view similar to Fig. 5, with parts shown in section on the line 66 ofFig. 3. Fig. 7 is a detail section on the line 7 7 of Fie'. 5.

'Ihe annunciator casing comprises a base portion 1 preferably formed ofwood, sheet and a front plate 3 having view openings therein throughwhich the indicating devices or targets of the anare displayed. In theconstruction shown, the front plate 8 is formed of glass which issuitably secured at its edges within the inturned edges or flanges 4 ofthe side walls 2. This plate is provided with an opaque coat 5 on itsrear face, the coat being omitted at suitable intervals to form viewopenings 6 through Vwhich the targets of the indicators are displayed.

The form of annunciator shown in the Specification of Letters Patent.

Application filed May 12, 1911.

- carries the target in Patented Mar. 16, 1915. serial No. 626,853.

drawings is specially intended for use in elevator cars and is providedwith two indicators for each Hoor of the building in which the elevatoris located, one for indicating up signals and the other for indicatingdown signals, the up indicating devices being in one vertical row orseries and the down indicating devices in another vertical row.

In accordance with the present invention, the improved indicatorcomprises a suitable target or like indicating device which has acombined reciprocating and oscillating movement between its normal andset positions. An electro-magnet, a fixed cam and suitable restoringmeans coperate to effect the shift of the indicating device. In the formshown in Figs. l, 2, 5 and 7, both shifting and restoring magnets areprovided for cach indicating device, while in the form shown in Figs. 3,4 and 6, common restoring means is provided for all of the indicatingdevices of the annunciator. In both forms shown, each indicatorcomprises a solenoid magnet 7, a target or drop 8 preferably mounted onthe core 9 of the solenoid magnet and a. fixed cam device whichcopcrates with the magnet in shifting the target. In the form shown inFigs. 4l, 2, 5 and 7, each indicator is provided with a solenoid magnetl0 for restoring it to normal position.

The solenoid magnets 7 and 10 are preferably cheaply formed of coilswound upon a central sleeve, each coil being arranged between ltwo disks11 of insulating material mounted on the sleeve. In the form shown inFigs. l, 2, 5 and 7, the coils of the setting and restoring magnets 7and l0 of each indicator are wound upon the opposite ends of a commonsleeve l2 which is preferably formed of brass or'like material, and thecore 9, which is common to both magnets, is rotatably and slidablymounted within the sleeve. Small metal supporting brackets 13 engage theopposite ends of the sleeve l2 and are provided with perforated baseflanges or ears 14 for receiving the screws 15 by which the indicatorhismounted upon the base l of the annunciator casing.

In accordance with the preferred arrangement, each indicator is mountedwithin the casing with the solenoid coils 7 and l0, the sleeve l2 andthe sliding rod or core 9, which horizontal position, the up and downindicators being arranged in two vertical rows, asshown. -The part ofthe sleeve 12 of each indicator that is'exposed between the coils 7 and10, is provided at its upper portion with an inclined or spiral cam slot16 which extends substantially half way around the sleeve and a pin 17fixed to and projecting later.- ally from the shifting rod or core 9,engages and extends through the cam slot 16. rlhe indicating device ortarget 8'is conveniently fixed to the outer end of thev projecting pin17. The inclined slot and pin connection between, the shifting rod orcore 9 and sleeve 12 serve to oscillate the latter and the target orindicator 8 connected thereto as these parts are shifted by the magnets7 and 10. In the preferred arrangement shown with the magnets inhorizontal position, the arrangement is such that the core andindicating target connected thereto is shifted through substantially ahalf revolution between its normal position horizontally be hind theaxis of the solenoid magnets and its set position in the front oi' themagnets.

In Figs. 1 and 2 the targets or drops of thev two uppermost indicatorsare shown in set position, and those of the other indicators in normalposition. InFigs. 5 and 7 the target is shown in normal position in fulllines and in Fig. 5 it isshown in set position in dotted lines. In thispreferred form, the pin 17 which carries the indicating levice or target9 extends horizontally and rearwardly through one end of the inclinedcam slot when the target is in normal position, and the pivot rod orcore 9 is at the inner end of its movement. Then, when the shifting core9 is energized, the rod or core is moved longitudinally and the cam slot16 acts upon the pin 17 to oscillate the core and target and throw thelatter from its normal rearward position upwardly and forwardly to itsset position in front of the axis of oscillation. The pin 17 thenextends-horizontally and forwardly through the opposite end of theinclined cam slot 16 and the shiftable supporting rod or core` 9 whichcarries the target is at the outer end of its movement. The face of theindicating target or drop is thus exposed through one of the viewopenings 6 in the'front plate of the annunciator'casing. Then, byenergizing the restoring magnet 10 it will act in connection with thecam slot 16 to throw the target back to normal position. In thispreferred form, the indicating target is thrown'from one side to theother over the center of oscillation, so that the force of gravity actsto complete the shiftr of the target as soon as it has passed its centerof motion. Furthermore, the target is securely held by gravity either inits normal or its set position and,while it can be readily shifted byone or the other of the magnets,

itcannot be easily jarred or accidentally will be controlled in theusual way by push buttons located at the floors of the building in whichthe elevator is located, while the switches in the energizing circuitsof the restoring magnets 10 can be manually controlled by the elevatorconductor or they can be automatically operated by suitable meanscontrolled by thevtravel ofthe car.

In the form shown in'Figs. 3, 4 and V6, each indicator is provided witha single setting magnet 7 from one end of which the sleeve 12 projects.As in the construction previously'described, the core 9 within thesleeveis provided with a laterally projecting pin 17 extending throughan inclined or spiral cam'slot 16 in the projecting portion of thesleeve 11 and which pin earriesthe indicating device or target 8. Inthis form,

the cores 9 of the several indicators extend' inwardly beyond thesleeves 12 and are provided with laterally projecting pins 18. Thesepins are arranged to be engaged'V by a series of cross arms 19 on avertically movable restoring rod 20. In the form shown, the ends of therestoring rod ,2O are enlarged and form the cores 21 of two solenoidmagnets 22 which are similarinconstruction to the other solenoid magnetsand are mounted in vertical position at the upper and lower ends of theannunciator casing. By energizing these magnets, the restoring rod 2O isshifted in vertical direction and the arms 19 thereon engage pins 18 onany ofthe indicating targets in set position and throw the same back tonormal position. Preferably the end of the restoring rod 20 extendsthrough a guide 23 at the lower end of the casing and is provided with abutton 24.- so that it can be operated by hand.

In other respects the'form shown in Figs. 3, 4i and 6 is similar to thatshown in Figs. 1,

2, 5 and 7. In both forms the indicator is Y ofv simple construction,can be economically manufactured, is readily shifted to and from setpositions and at the same time is so arranged that, without the use oflocks or latches` it is securely held in its normal and set positions.v

It is obvious that the improved indicator may be used for a number ofpurposes and that changes can be made in the details set forth withoutdepartureifrom the essentials of the invention as defined in the claims.

I claim as my invention 1. An electric indicator comprising a solenoidmagnet, a longitudinally movable, oscillating core thereforyanindicating target fixed to said coreon one side'thereof,anda cam foroscillating said core, said target being gravity held in its normal andset positions and said core and magnet coperating to swing said targetfrom normal position over a high point or dead center to set position.

2. An electric indicator comprising a solenoid magnet, a longitudinallymovable, oscillating core therefor, an indicating target mounted on saidcore on one side thereof, a fixed cam member for oscillating said coreand target, and restoring' means for said target, said magnet, saidrestoring means and said cam member coperating to shift said target overa high point or dead center between its normal and set positions.

3. An electric indicator comprising a solenoid magnet, a longitudinallyshiftable, oscillating core for said magnet, a sleeve through which saidcore extends, said sleeve having an inclined cam slot, a pin fixed tosaid core and projecting laterally therefrom through said slot foreffecting a partial rotation of said core, as the latter is shiftedlongitudinally, and a target `fixed to said pin on one side of saidcore.

4:. In an electric indicator, a solenoid magnet comprising a sleeve anda coil mounted thereon, said sleeve projecting from one end of said coiland having an inclined cam slot in its projecting end, a pin fixed tosaid core and extending through said slot and a target fixed to saidpin.

5. An electric indicator comprising a suitable support, a longitudinallymovable, oscillating rod mounted in said support, a target mounted onsaid rod and arranged on one side thereof, a magnet for shifting saidrod longitudinally, and a cam device for oscillating said rodand target,said target being gravity held in its normal and set positions and saidcam device and magnet coperating to swing said target from its normal toits set position over a high point or dead center.

6. An electric indicator comprising a suitable support, a longitudinallymovable, oscillating rod mounted on said support, a target mounted onsaid rod, a magnet for Vshifting said rod longitudinally, a cam memberfor oscillating said rod and said target, and restoring means for saidtarget, said magnet, said restoring means and said cam device coperatingto shift said target between its normal and set positions and arrangedto swing the same from a high point or dead center between suchpositions.

7. An electric indicator comprising a substantially horizontal solenoidmagnet, a core therefor, a fixed cam member coperating with said corefor effecting a half revolution thereof as the latter is shiftedlongitudinally, and a target mounted on one side of said core tooscillate and shift longitudinally therewith, said target being arrangedto swing over said core and having its normal and set positions onopposite sides thereof.

8. A11 electric indicator comprisinga horizontally mounted solenoidcoil, a sleeve extending through said coil and projecting from one endthereof, a core in said sleeve, said sleeve having an inclined cam slotin its projecting end and extending substantially through its upper halfportion and said core having a pin extending through said cam slot,whereby a half revolution is imparted to said core as it is shiftedlongitudinally, a target fixed on said pin and arranged to oscillatefrom its normal position on one side of said core and sleeve to its setposition on the opposite side thereof, and

Ameans for restoring said target and said core.

9. An electric .indicator comprising a suitable support, alongitudinally movable, pivot rod mounted in said support, an indicatingtarget mounted on one side of said pivot rod, a magnet for shifting saidrod and target in axial direction, a fixed cam member arranged to imparta half revolution to said target as it is shifted by said magnet, saidtarget being arranged to swing over said rod and having its normal andset positions on opposite sides thereof.

10. An electric indicator comprising a horizontally mounted, rotatableand longitudinally movable rod, a target mounted on said rod andarranged to swing over the same between its normal and set positions onopposite sides of said rod, two magnets for reciprocating said rod inopposite directions and a fixed cam member for imparting a halfrevolution to said rod and target as the latter are shifted by saidmagnets.

l1. An electric indicator comprising a casing, a magnet, a rod arrangedto be shifted longitudinally by said magnet, a pin projecting laterallyfrom said rod, a target mounted on said pin on one side of said rod, afixed cam member for oscillating said rod and target as said target isshifted longitudinally to thereby move said target from its normal toits set position, said casing having a view opening through which saidtarget is exposed in set position, and means for restoring said targetto normal position.

l2. An electric indicator comprising a casing having a view opening inits front, a magnet in said casing, a rod mounted in said casing andarranged to be shifted longitudinally by said magnet, a pin projectinglaterally from said rod, a target fixed to the end of said pin andarranged at right angles thereto, and on one side of said rod, and afixed cam member for oscillating said rod and target to shift the latterfrom its normal position away from said view opening to its set positionbehind said opening.

13. An electric indicator comprising a solenoid magnet, a longitudinallymovable,

oscillatingycore for said magnet, anindieat ing target mounted ononeside oi said Core and a cam member' for oscillating said core and targetas said parts are shifted in axial Y direction b y said magnet, said cammember having stop portions at its ends for holding said target in itsnormal and in its set positions, and a high point intermediate its endsover which said target is shifted by said magnet, whereby said target isgravity-held in its normal and set positions.

14. An electric indioatoi1 comprising a a solenoid magnet and alongitudinally movable, I oscillating core for said magnet, a

sleeve `through which said core extends, saidv MAX NoRDoF-r.

Witnesses:

HARRY L. GLAPP, KATHARINE GERLACH.

Copies of this patent may be obtained for ve cents each, byaddressng theCommissioner of Patents,

Washington. D. C.v

